BayAreaSS

iTrader: (10)

I would like to know if bullets burn out once they get old? I thought i read something about this before.

And if they do burn out does the noise level get quieter?

Just let me know if you guys have heard of this before

Thanks

minesfaster

iTrader: (24)

I have had my dyno max bullit for 2 years now and it hasnt quiested down one bit. they are a straight through design so i dont see them getting quieter. mine sounds great to me esp with the hollowed cats on my ls1.

orangeapeel

iTrader: (18)

Basically it is a step up from a glasspack. I think that they will last for several (meaning 5+) years with actual racing.

lsx24

iTrader: (45)

No, they won't change at all. They are built as resonators from the inside, there are no replaceable or moving parts, so they will not change tone.

GR33N GoblinM6

iTrader: (14)

if they are a step up from a glass pack.. what would you call a chambered muffler? because when you look down a glasspack and chambered muffler.. they look identical.. and the bullet is just a perforated core.. no baffles..

BayAreaSS

iTrader: (10)

Ok thanks guys. It seems like my duals are getting quieter but i think im just use to them now. I've had them about a month.

Ripper415

iTrader: (6)

they just seem quieter because you're going deaf from being in the car

Starz T/A 17

iTrader: (6)

Yea I think its just gettin quieter b/c your used to it, happened with my car too

orangeapeel

iTrader: (18)

A chambered muffler.

I was talking in regards to the PepBoys 15$ glasspacks.

300bhp/ton

There are two main types of muffler chambered mufflers use delfection to cancel out the sound waves and thus reduce db level.

They can either be straight thru as in the LM resontator or have obstructions like the GMMG or be total chambers like the Hooker Areo chambered.

Bullets are a different form of muffler and use sound absorbing material to reduce db levels. This means they have packing in the muffler. Tradiditonally this would be glassfibre due to it's cost and densisty. Modern bullet mufflers are identical but use metal weave instead of glass fibre.

Some people (like Orange) seem to hate glasspacks, never really understood why. Thinks its more of a social thing than technical as glasspacks are effective and can sound just as good.

Mufflers should not become quieter over time, unless they are becoming blocked or fillling up with water.

Glasspacks will actually get louder after 'x' amount of time due to the glassfibre breaking down and becoming less efficent. This is not generally the case with metal weave packing material.

orangeapeel

iTrader: (18)

I don't hate glasspacks. They are good for off-road vehicles. Not like no cat off road either...like this offroad:

300bhp/ton

Nice pic

And I do know where you're coming from. But I guess being this side of the pond V8's are much rarer, 90% of off roaders here will make big black clouds of smoke and a diesel roar as opposed to the rumble of a V8.

Flawless02SS

iTrader: (9)

The bullet should not burn out. But if it did, it would def NOT get quiet!!!!

Bader-X

iTrader: (2)

I think I saw some mufflers (not dynomax though) with fiberglass or some type of fabric as the dampening inside some non-chambered mufflers .... and some had metal thin shreds .... maybe the fiber glass things are what burn?

dpw41285

iTrader: (26)

YOUR GOING DEAF!!!! j/k had to do it i have had mufflers change tone, or even on my turbo mr2 burn the packing out of it and smoke for 20 min across 6 lanes of traffic. but with your set up i dont see anything changing

BayAreaSS

iTrader: (10)

I was waiting for that!

I'm sure im just getting use to it because it is my DD.

Which muffler will be louder.....My bullets or powersticks?

300bhp/ton

depends on casing diameter, core diameter and muffler length.

All being equal I'd guess pretty similar although different tone.

LS1Formulation

iTrader: (13)

Heh... I remember some years ago watching some kid banging his mufflers on the cement outside his house. I asked him what he was doing and he said "I'm breaking the glass in my glasspacks so they'll make more power". Oooo k buddy, whatever you say, lol.

linegtdt52

iTrader: (12)

As to respond to the bullets getting quieter after about a month, I understand what you are talking about because mine HAVE toned done a touch. It comes from the carbon that is now lining the walls of you aluminum bullet where before it was resonating inside the chamber and now it is dampened due to the carbon build up from the exhaust gases.

ClemsonT/A

iTrader: (2)

The same thing happened to me.. I was like "why the hell did it get so quiet" but everyone assures me I just got used to it and its still loud as hell.